On average how much do weights cost...per pound?

I was curious becuase I am thinking of buying new weights (5-45's) How much does everything generally cost? What on average do you guys pay per pound? Also do the different brands really matter or are you just paying for the brand name?

Your god is imaginary, your holy book laughable, and your religion is false. Come at me bro.
Religion pisses in the fountain of knowledge.
"Faith is the surrender of the mind, it's the surrender of reason, it's the surrender of the only thing that makes us different from other mammals." - Christopher Hitchens